// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <vector>

#include "base/memory/ref_counted.h"
#include "base/prefs/testing_pref_service.h"
#include "base/string16.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/webdata/web_data_service_factory.h"
#include "chrome/test/base/chrome_render_view_host_test_harness.h"
#include "chrome/test/base/testing_browser_process.h"
#include "chrome/test/base/testing_profile.h"
#include "components/autofill/browser/autocomplete_history_manager.h"
#include "components/autofill/browser/autofill_external_delegate.h"
#include "components/autofill/browser/autofill_manager.h"
#include "components/autofill/browser/test_autofill_manager_delegate.h"
#include "components/autofill/browser/webdata/autofill_webdata_service.h"
#include "components/autofill/common/form_data.h"
#include "components/webdata/common/web_data_service_test_util.h"
#include "content/public/test/test_browser_thread.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/rect.h"

using content::BrowserThread;
using content::WebContents;
using testing::_;

namespace autofill {

namespace {

class MockWebDataService : public AutofillWebDataService {
 public:
  MockWebDataService()
      : AutofillWebDataService(
            NULL, WebDataServiceBase::ProfileErrorCallback()) {
    current_mock_web_data_service_ = this;
  }

  MOCK_METHOD1(AddFormFields, void(const std::vector<FormFieldData>&));

  static scoped_refptr<MockWebDataService> GetCurrent() {
    if (!current_mock_web_data_service_) {
      return new MockWebDataService();
    }
    return current_mock_web_data_service_;
  }

 protected:
  virtual ~MockWebDataService() {}

 private:
  // Keep track of the most recently created instance, so that it can be
  // associated with the current profile when Build() is called.
  static MockWebDataService* current_mock_web_data_service_;
};

MockWebDataService* MockWebDataService::current_mock_web_data_service_ = NULL;

class MockWebDataServiceWrapperCurrent : public MockWebDataServiceWrapperBase {
 public:
  static ProfileKeyedService* Build(content::BrowserContext* profile) {
    return new MockWebDataServiceWrapperCurrent();
  }

  MockWebDataServiceWrapperCurrent() {}

  virtual scoped_refptr<AutofillWebDataService> GetAutofillWebData() OVERRIDE {
    return MockWebDataService::GetCurrent();
  }

 private:
  DISALLOW_COPY_AND_ASSIGN(MockWebDataServiceWrapperCurrent);
};

class MockAutofillManagerDelegate
    : public autofill::TestAutofillManagerDelegate {
 public:
  MockAutofillManagerDelegate() {}
  virtual ~MockAutofillManagerDelegate() {}
  virtual PrefService* GetPrefs() OVERRIDE { return &prefs_; }

 private:
  TestingPrefServiceSimple prefs_;

  DISALLOW_COPY_AND_ASSIGN(MockAutofillManagerDelegate);
};

}  // namespace

class AutocompleteHistoryManagerTest : public ChromeRenderViewHostTestHarness {
 protected:
  AutocompleteHistoryManagerTest()
      : ui_thread_(BrowserThread::UI, &message_loop_),
        db_thread_(BrowserThread::DB) {
  }

  virtual void SetUp() OVERRIDE {
    ChromeRenderViewHostTestHarness::SetUp();
    web_data_service_ = new MockWebDataService();
    WebDataServiceFactory::GetInstance()->SetTestingFactory(
        profile(), MockWebDataServiceWrapperCurrent::Build);
    autocomplete_manager_.reset(new AutocompleteHistoryManager(web_contents()));
  }

  virtual void TearDown() OVERRIDE {
    autocomplete_manager_.reset();
    web_data_service_ = NULL;
    ChromeRenderViewHostTestHarness::TearDown();
    message_loop_.RunUntilIdle();

  }

  content::TestBrowserThread ui_thread_;
  content::TestBrowserThread db_thread_;
  scoped_refptr<MockWebDataService> web_data_service_;
  scoped_ptr<AutocompleteHistoryManager> autocomplete_manager_;
  MockAutofillManagerDelegate manager_delegate;
};

// Tests that credit card numbers are not sent to the WebDatabase to be saved.
TEST_F(AutocompleteHistoryManagerTest, CreditCardNumberValue) {
  FormData form;
  form.name = ASCIIToUTF16("MyForm");
  form.method = ASCIIToUTF16("POST");
  form.origin = GURL("http://myform.com/form.html");
  form.action = GURL("http://myform.com/submit.html");
  form.user_submitted = true;

  // Valid Visa credit card number pulled from the paypal help site.
  FormFieldData valid_cc;
  valid_cc.label = ASCIIToUTF16("Credit Card");
  valid_cc.name = ASCIIToUTF16("ccnum");
  valid_cc.value = ASCIIToUTF16("4012888888881881");
  valid_cc.form_control_type = "text";
  form.fields.push_back(valid_cc);

  EXPECT_CALL(*web_data_service_, AddFormFields(_)).Times(0);
  autocomplete_manager_->OnFormSubmitted(form);
}

// Contrary test to AutocompleteHistoryManagerTest.CreditCardNumberValue.  The
// value being submitted is not a valid credit card number, so it will be sent
// to the WebDatabase to be saved.
TEST_F(AutocompleteHistoryManagerTest, NonCreditCardNumberValue) {
  FormData form;
  form.name = ASCIIToUTF16("MyForm");
  form.method = ASCIIToUTF16("POST");
  form.origin = GURL("http://myform.com/form.html");
  form.action = GURL("http://myform.com/submit.html");
  form.user_submitted = true;

  // Invalid credit card number.
  FormFieldData invalid_cc;
  invalid_cc.label = ASCIIToUTF16("Credit Card");
  invalid_cc.name = ASCIIToUTF16("ccnum");
  invalid_cc.value = ASCIIToUTF16("4580123456789012");
  invalid_cc.form_control_type = "text";
  form.fields.push_back(invalid_cc);

  EXPECT_CALL(*(web_data_service_.get()), AddFormFields(_)).Times(1);
  autocomplete_manager_->OnFormSubmitted(form);
}

// Tests that SSNs are not sent to the WebDatabase to be saved.
TEST_F(AutocompleteHistoryManagerTest, SSNValue) {
  FormData form;
  form.name = ASCIIToUTF16("MyForm");
  form.method = ASCIIToUTF16("POST");
  form.origin = GURL("http://myform.com/form.html");
  form.action = GURL("http://myform.com/submit.html");
  form.user_submitted = true;

  FormFieldData ssn;
  ssn.label = ASCIIToUTF16("Social Security Number");
  ssn.name = ASCIIToUTF16("ssn");
  ssn.value = ASCIIToUTF16("078-05-1120");
  ssn.form_control_type = "text";
  form.fields.push_back(ssn);

  EXPECT_CALL(*web_data_service_, AddFormFields(_)).Times(0);
  autocomplete_manager_->OnFormSubmitted(form);
}

// Verify that autocomplete text is saved for search fields.
TEST_F(AutocompleteHistoryManagerTest, SearchField) {
  FormData form;
  form.name = ASCIIToUTF16("MyForm");
  form.method = ASCIIToUTF16("POST");
  form.origin = GURL("http://myform.com/form.html");
  form.action = GURL("http://myform.com/submit.html");
  form.user_submitted = true;

  // Search field.
  FormFieldData search_field;
  search_field.label = ASCIIToUTF16("Search");
  search_field.name = ASCIIToUTF16("search");
  search_field.value = ASCIIToUTF16("my favorite query");
  search_field.form_control_type = "search";
  form.fields.push_back(search_field);

  EXPECT_CALL(*(web_data_service_.get()), AddFormFields(_)).Times(1);
  autocomplete_manager_->OnFormSubmitted(form);
}

namespace {

class MockAutofillExternalDelegate : public AutofillExternalDelegate {
 public:
  explicit MockAutofillExternalDelegate(content::WebContents* web_contents)
      : AutofillExternalDelegate(
            web_contents, AutofillManager::FromWebContents(web_contents)) {}
  virtual ~MockAutofillExternalDelegate() {}

  MOCK_METHOD5(OnSuggestionsReturned,
               void(int query_id,
                    const std::vector<base::string16>& autofill_values,
                    const std::vector<base::string16>& autofill_labels,
                    const std::vector<base::string16>& autofill_icons,
                    const std::vector<int>& autofill_unique_ids));

 private:
  DISALLOW_COPY_AND_ASSIGN(MockAutofillExternalDelegate);
};

class AutocompleteHistoryManagerStubSend : public AutocompleteHistoryManager {
 public:
  explicit AutocompleteHistoryManagerStubSend(WebContents* web_contents)
      : AutocompleteHistoryManager(web_contents) {}

  // Increase visibility for testing.
  void SendSuggestions(const std::vector<base::string16>* suggestions) {
    AutocompleteHistoryManager::SendSuggestions(suggestions);
  }

  // Intentionally swallow the message.
  virtual bool Send(IPC::Message* message) OVERRIDE {
    delete message;
    return true;
  }
};

}  // namespace

// Make sure our external delegate is called at the right time.
TEST_F(AutocompleteHistoryManagerTest, ExternalDelegate) {
  // Local version with a stubbed out Send()
  AutocompleteHistoryManagerStubSend autocomplete_history_manager(
      web_contents());

  AutofillManager::CreateForWebContentsAndDelegate(
      web_contents(), &manager_delegate, "en-US");

  MockAutofillExternalDelegate external_delegate(web_contents());
  autocomplete_history_manager.SetExternalDelegate(&external_delegate);

  // Should trigger a call to OnSuggestionsReturned, verified by the mock.
  EXPECT_CALL(external_delegate, OnSuggestionsReturned(_, _, _, _, _));
  autocomplete_history_manager.SendSuggestions(NULL);
}

}  // namespace autofill